diff options
Diffstat (limited to 'drivers/usb/dwc3/host.c')
| -rw-r--r-- | drivers/usb/dwc3/host.c | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/drivers/usb/dwc3/host.c b/drivers/usb/dwc3/host.c new file mode 100644 index 000000000000..7f1ae5cf9909 --- /dev/null +++ b/drivers/usb/dwc3/host.c @@ -0,0 +1,88 @@ +/** + * host.c - DesignWare USB3 DRD Controller Host Glue + * + * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com + * + * Authors: Felipe Balbi <balbi@ti.com>, + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 of + * the License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/platform_device.h> +#include <linux/usb/xhci_pdriver.h> + +#include "core.h" + +int dwc3_host_init(struct dwc3 *dwc) +{ + struct platform_device *xhci; + struct usb_xhci_pdata pdata; + int ret; + struct device_node *node = dwc->dev->of_node; + + xhci = platform_device_alloc("xhci-hcd", PLATFORM_DEVID_AUTO); + if (!xhci) { + dev_err(dwc->dev, "couldn't allocate xHCI device\n"); + return -ENOMEM; + } + + arch_setup_dma_ops(&xhci->dev, 0, 0, NULL, 0); + dma_set_coherent_mask(&xhci->dev, dwc->dev->coherent_dma_mask); + + xhci->dev.parent = dwc->dev; + xhci->dev.dma_mask = dwc->dev->dma_mask; + xhci->dev.dma_parms = dwc->dev->dma_parms; + + dwc->xhci = xhci; + + ret = platform_device_add_resources(xhci, dwc->xhci_resources, + DWC3_XHCI_RESOURCES_NUM); + if (ret) { + dev_err(dwc->dev, "couldn't add resources to xHCI device\n"); + goto err1; + } + + memset(&pdata, 0, sizeof(pdata)); + + pdata.usb3_lpm_capable = dwc->usb3_lpm_capable; + + ret = of_property_read_u32(node, "xhci-imod-value", + &pdata.imod_interval); + if (ret) + pdata.imod_interval = 0; /* use default xhci.c value */ + + ret = platform_device_add_data(xhci, &pdata, sizeof(pdata)); + if (ret) { + dev_err(dwc->dev, "couldn't add platform data to xHCI device\n"); + goto err1; + } + + phy_create_lookup(dwc->usb2_generic_phy, "usb2-phy", + dev_name(&xhci->dev)); + phy_create_lookup(dwc->usb3_generic_phy, "usb3-phy", + dev_name(&xhci->dev)); + + /* Platform device gets added as part of state machine */ + return 0; + +err1: + platform_device_put(xhci); + return ret; +} + +void dwc3_host_exit(struct dwc3 *dwc) +{ + phy_remove_lookup(dwc->usb2_generic_phy, "usb2-phy", + dev_name(&dwc->xhci->dev)); + phy_remove_lookup(dwc->usb3_generic_phy, "usb3-phy", + dev_name(&dwc->xhci->dev)); + if (!dwc->is_drd) + platform_device_unregister(dwc->xhci); +} |